This is one of the semiconductor types. This part name is CSR8635.
This product has BlueCore Stereo ROM Solution / Fully Qualified Single-chip Bluetooth System functions.
Manufacturers of product is CSR.
Image and pinout :
CSR8635 PDF Datasheet
Some of the text files within the PDF file
CSR8635 QFN Data Sheet Prepared for qingbo keven.zhou – excelpoint.com.cn – Friday, September 27, 2013 Features ■ Bluetooth v4.0 specification compliant ■ 80MHz RISC MCU and 80MIPS Kalimba DSP ■ Stereo codec with 1 microphone input ■ Internal ROM, serial flash memory and EEPROM interfaces ■ High-performance Stereo codec ■ Radio includes integrated balun with RF performance of 8dBm transmit power and -89dBm receiver sensitivity ■ AVRCP v1.4 ■ 5-band fully configurable EQ ■ Wideband speech supported by HFP v1.6 and mSBC codec ■ CSR’s latest CVC technology for narrowband and wideband voice connections including wind noise reduction ■ Multipoint support for A2DP connection to 2 A2DP sources for music playback ■ Secure simple pairing, CSR’s proximity pairing and CSR’s proximity connections ■ Stereo line-in ■ Serial interfaces: USB 2.0, UART, IC and SPI ■ SBC, MP3 and AAC decoder support ■ Wired audio support ■ Integrated dual switch-mode regulators, l [ … ]
Please refer to the file for details.